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Icom IC-910H - Attenuator; Simple Band Scope

Icom IC-910H
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n Attenuator
The attenuator prevents desired signals from distort-
ing when very strong signals are near the desired fre-
quency, or when very strong electric fields, such as
from broadcasting stations are near from your loca-
tion.
The attenuator can be set to both or either band sep-
arately, and the attenuation level can be set for each
band independently.
Push [ATT] to turn the attenuator ON and OFF.
•
ATT”indicatorappearswhentheattenuatorisactivated.
D Setting the attenuation level
qPush[M/S•BAND]or[SUB]toselectthedesired
band of the attenuation level to be set.
w Push [SET] then [ATT] to enter the attenuator set
mode.
e Rotate the tuning dial to select attenuation level.
•Push[M-CL5]toreturntothedefaultvalue.
r Push [SET] to exit the attenuator set mode.
NOTE: When using the noise blanker, received
audio may be distorted if they are excessively
strong.
n Simple band scope
Thisfunctionallowsyoutovisually“sweep”anarea
surrounding the set frequency for other signals. Detect-
ed signals are indicated graphically on the S-meter.
q Set the operating frequency and mode.
w Push [SWP 0] to turn the simple band scope func-
tion ON and OFF.
•“SWPindicatorasheswhenthesimplebandscope
function is activated.
•DetectedsignalsareindicatedusingtheS-meterand
Z”indicator,displayedabovetheS-meter,showsthe
center frequency (displayed frequency).
•Thesignalavailabilityisdetectedbythenoisesquelch
condition (open or close).
e To monitor the detected signal, rotate the tuning dial
tosettheappearing“dot”oftheS-metertobelow
theZindicator.
•Thefrequencyreadoutshowsthedetectedsignalfre-
quency.
D Setting sweeping time interval
q Push [SET] then [SWP 0] to enter the sweep set
mode.
w Rotate the tuning dial to select sweeping time inter-
val.
•Push[M-CL5]toreturntothedefaultvalue.
e Push [SWP 0] to exit the sweep set mode.
29
5
RECEIVE AND TRANSMIT
[ATT]
C
W
VFO A
A
TT
[SWP 0]
F
M
VFOA
S
W
P
Indicates detected signals Sweep center
Shows 10 channels around the displayed
frequency.
Attenuation levels
144 MHz/ 0–100% variable
430(440) MHz bands Approx. 15 dB attenuation
at 100% setting
1200 MHz band Approx. 20 dB fixed
(optional)

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